DESCRIPTION
TheUC3842/3/4/5family of controlICs provides the necessary features to implement off-line or DC to DC fixed frequency current mode control schemes witha minimal external parts count.
   
■ OPTIMIZED FOR OFF-LINE AND DC TO DC
    CONVERTERS
■ LOW START-UP CURRENT (< 1 mA)
■ AUTOMATIC FEED FORWARD COMPENSATION
■ PULSE-BY-PULSECURRENT LIMITING
■ ENHANCED LOAD RESPONSE CHARACTERISTICS
■ UNDER-VOLTAGE LOCKOUTWITH HYSTERESIS
■ DOUBLE PULSE SUPPRESSION
■ HIGH CURRENT TOTEM POLE OUTPUT
■ INTERNALLY TRIMMED BANDGAP REFERENCE
■ 500 KHz OPERATION
■ LOW RO ERRORAMP